loadProgress

Triggered when the loading progress percentage is updated.

Event Data

This is the data provided to the message event:

interface EventData {
    eventName: 'loadProgress',
    loadFraction: number,
}

• eventName: The event name.
• loadFraction: The total loading percentage as a fraction from 0 to 1 (inclusive).

Examples

<!-- loading screen bar -->
<progress id="loading-bar" value="0" max="1"></progress>

<script type="text/javascript">
window.addEventListener('message', (event) => {
    // ensure that we are handling the loadProgress event
    if (event.data.eventName !== 'loadProgress') return;

    // use the event's data to fill up the loading bar
    document.getElementById('loading-bar').value = event.data.loadFraction;
});
</script>